CVE entry · CVE-2021-22054
CVE-2021-22054: Omnissa Workspace ONE Server-Side Request Forgery
Omnissa Workspace One UEM formerly known as VMware Workspace One UEM contains a server-side request forgery (SSRF) vulnerability that could allow a malicious actor with network access to UEM to send their requests without authentication and to gain access to sensitive information.
- Actively exploited: added to CISA’s KEV catalog on March 9, 2026.
- Use by ransomware: not established so far.
- Remediation deadline for US federal agencies: March 23, 2026.
Description from CISA’s KEV catalog.
What to do
- Check whether your estate includes Omnissa Workspace One UEM, including internet-facing devices.
- Apply the vendor’s patch or mitigations (references below). Failing that, isolate the product or stop using it, as CISA requires of US federal agencies.
- An exploited vulnerability has often been used before it was fixed: look for signs of compromise, especially on internet-facing devices.